--- title: AppSubscriptionTrialExtendUserError - GraphQL Admin description: An error that occurs during the execution of `AppSubscriptionTrialExtend`. api_version: unstable api_name: admin source_url: html: https://shopify.dev/docs/api/admin-graphql/unstable/objects/appsubscriptiontrialextendusererror md: https://shopify.dev/docs/api/admin-graphql/unstable/objects/appsubscriptiontrialextendusererror.md --- # App​Subscription​Trial​Extend​User​Error object An error that occurs during the execution of `AppSubscriptionTrialExtend`. ## Fields * code [App​Subscription​Trial​Extend​User​Error​Code](https://shopify.dev/docs/api/admin-graphql/unstable/enums/AppSubscriptionTrialExtendUserErrorCode) The error code. * field [\[String!\]](https://shopify.dev/docs/api/admin-graphql/unstable/scalars/String) The path to the input field that caused the error. * message [String!](https://shopify.dev/docs/api/admin-graphql/unstable/scalars/String) non-null The error message. *** ## Map No referencing types *** ## Mutations * [app​Subscription​Trial​Extend](https://shopify.dev/docs/api/admin-graphql/unstable/mutations/appSubscriptionTrialExtend) mutation Extends the trial period for an existing app subscription. Trial extensions give merchants additional time to use the app before committing to paid billing. Requires the subscription ID and the number of days to extend (between one and 1000). The extension modifies the existing trial end date, allowing continued access to subscription features without immediate billing. Returns the updated [`AppSubscription`](https://shopify.dev/docs/api/admin-graphql/latest/objects/AppSubscription). Learn more about [offering free trials](https://shopify.dev/docs/apps/launch/billing/offer-free-trials). *** ## <\~> AppSubscriptionTrialExtendUserError Mutations ### Mutated by * <\~>[app​Subscription​Trial​Extend](https://shopify.dev/docs/api/admin-graphql/unstable/mutations/appSubscriptionTrialExtend) *** ## Interfaces * [Displayable​Error](https://shopify.dev/docs/api/admin-graphql/unstable/interfaces/DisplayableError) interface *** ## ||-AppSubscriptionTrialExtendUserError Implements ### Implements * ||-[Displayable​Error](https://shopify.dev/docs/api/admin-graphql/unstable/interfaces/DisplayableError)